<template>
<el-container class="home_container">
    <!-- 头部区域 -->
  <el-header>
      <div>
          <img src="../assets/heima.png" alt="">
          <span>电商后台管理系统</span>
      </div>
       <el-button type="info" @click="logout">退出</el-button></el-header>
  <!-- 页面主题区域 -->
  <el-container>
      <!-- 侧边栏 -->
    <el-aside :width="isCollapse ? '64px':'200px'">
        <div class="toggle-button" @click="toggleCollapse">
          <i class="el-icon-loading"></i>
        </div>
        <el-menu
      background-color="#373d41"
      text-color="#fff"
      active-text-color="#ffd04b" unique-opened :collapse="isCollapse" :collapse-transition="false" :router="true" :default-active="activePath"> 
      <!-- 一级菜单 -->
      <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id" >
          <!-- 一级菜单的模板区域 -->
        <template slot="title">
            <!-- 图标 -->
          <i :class="iconsObj[item.id]"></i>
          <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>
        <!-- 二级菜单 -->
       <el-menu-item :index="'/'+subItem.path + ''" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path )">
         <template slot="title">
            <!-- 图标 -->
          <i class="el-icon-orange"></i>
          <!-- 文本 -->
          <span>{{subItem.authName}}</span>   
          </template>
        </el-menu-item>
      </el-submenu>
     
    </el-menu>
    </el-aside>
    <!-- 右侧内容主体 -->
    <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
    </el-main>
  </el-container>
</el-container>
</template>
<script>
export default {
      created(){
        this.getMenuList(),
        this.activePath = window.sessionStorage.getItem('activePath')
    },
    data() {
        return {
            menulist:[],
            iconsObj:{
                '125':'iconfont icon-user',
                '103':'iconfont icon-tijikongjian',
                '101':'iconfont icon-shangpin',
                '102':'iconfont icon-danju',
                '145':'iconfont icon-baobiao'
            },
            isCollapse:false,
            activePath:''
        }
    },

    methods:{
        logout() {
            window.sessionStorage.clear();
            this.$router.push("/login");
        },
        async getMenuList(){
           const {data: res} = await this.$http.get('menus')
           if(res.meta.status !==200) return this.$message.error("获取菜单失败")
           this.menulist = res.data
           console.log(res);
       },
       toggleCollapse(){
           this.isCollapse = !this.isCollapse
       },
       saveNavState(activePath){
           window.sessionStorage.setItem('activePath',activePath)
           this.activePath=activePath
       }
    }
}
</script>
<style lang="less" scoped>
.home_container {
    height: 100%;
}
.el-header {
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #fff;
    font-size: 20px;
    > div {
       display: flex;
       align-items: center;
       span {
           margin-left: 15px;
       } 
    }
}
.el-aside {
    background-color: #333744;
    .el-menu {
        border-right: none;
    }
}
.el-main {
    background-color: #eaedf1;
}
.iconfont {
    margin-right: 10px;
}
.toggle-button {
    background-color: #4a5064;
    font-size: 14px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
}
</style>